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x in (-oo:+oo)
x*((2*(x-3))/2)-6 = 0
x*(x-3)-6 = 0
x*(x-3)-6 = 0
x^2-3*x-6 = 0
x^2-3*x-6 = 0
x^2-3*x-6 = 0
DELTA = (-3)^2-(-6*1*4)
DELTA = 33
DELTA > 0
x = (33^(1/2)+3)/(1*2) or x = (3-33^(1/2))/(1*2)
x = (33^(1/2)+3)/2 or x = (3-33^(1/2))/2
(x-((3-33^(1/2))/2))*(x-((33^(1/2)+3)/2)) = 0
(x-((3-33^(1/2))/2))*(x-((33^(1/2)+3)/2)) = 0
( x-((3-33^(1/2))/2) )
x-((3-33^(1/2))/2) = 0 // + (3-33^(1/2))/2
x = (3-33^(1/2))/2
( x-((33^(1/2)+3)/2) )
x-((33^(1/2)+3)/2) = 0 // + (33^(1/2)+3)/2
x = (33^(1/2)+3)/2
x in { (3-33^(1/2))/2, (33^(1/2)+3)/2 }
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